The app will be free, at least at first, and will also be
available to download on other devices, though with a monthly
subscription fee.

The effort is reportedly called "Project Rainbow" internally, and
marks Bezos' first move to create ties between the newspaper and
Amazon.

The initiative is being led by the former editor in chief of
Salon, Kerry Lauerman, who was one of many new hires brought on
since Bezos took charge.

As Stone points out, this move would not only get the Post to
more readers, but also potentially make the Kindle Fire HDX
tablet more attractive to buyers. Amazon has made a huge bet on original content, like television
shows and video games, to add value to its devices through its
subscription service, Amazon Prime, and adding Washington Post's
news could align with those efforts.

Disclosure: Jeff Bezos is an investor in Business Insider through his
personal investment company Bezos Expeditions.